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A kind of production process of galvanized steel coil

A production process and technology of galvanized steel, applied in hot-dip plating process, metal material coating process, coating and other directions, can solve problems such as galvanized layer peeling off, extend service life, enhance corrosion resistance, and inhibit dissolution Effect

Active Publication Date: 2022-07-19
ZHEJIANG SOUTHEAST METAL SHEET
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, there are following defects in the above-mentioned technical scheme: pollutants such as dust and iron powder are easily and firmly bonded on the substrate surface of cold-rolled low-carbon steel, and the existence of these pollutants has a greater impact on the quality of galvanized steel sheets. After a period of time, the galvanized layer on the surface of the steel plate is prone to fall off

Method used

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  • A kind of production process of galvanized steel coil
  • A kind of production process of galvanized steel coil

Examples

Experimental program
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Effect test

Embodiment 1

[0037] A production process of a galvanized steel coil, the production process of the galvanized steel coil comprises the following steps:

[0038] S1, take a cold-rolled hard steel coil with a thickness of 0.6mm, its chemical composition and content are shown in Table 1, after being uncoiled by an uncoiler in turn, cut the head and cut the tail, and weld by an automatic seam welder;

[0039] S2, weigh 200g of sodium hyaluronate and 1350g of deionized water in proportion, add them into a glass container, stir at room temperature to completely dissolve the sodium hyaluronate, adjust the pH of the solution to 5.5, then add 25g of gallium chloride, 200g of Sodium silicate and 50g of sodium stearate were stirred at room temperature for 4 hours at a speed of 625r / min to obtain a degreasing solution, and then the cold-rolled hard steel coils treated by S1 were immersed in the degreasing solution in turn, washed with a brush roller, Hot air drying, passing through the inlet looper to...

Embodiment 2

[0046] A production process of a galvanized steel coil, the production process of the galvanized steel coil comprises the following steps:

[0047] S1, take a cold-rolled hard steel coil with a thickness of 0.4mm, its chemical composition and content are shown in Table 1, after being uncoiled by an uncoiler in turn, cut the head and cut the tail, and welded by an automatic seam welder;

[0048] S2, weigh 150g sodium hyaluronate and 1300g deionized water in proportion, add them into a glass container, stir at room temperature to completely dissolve the sodium hyaluronate, adjust the pH of the solution to 5, then add 20g gallium chloride, 150g Sodium silicate and 30 g of sodium stearate were stirred at room temperature for 3 hours at a speed of 600 r / min to obtain a degreasing solution, and then the cold-rolled hard steel coils treated by S1 were immersed in the degreasing solution in turn, and washed with a brush roller. Hot air drying, passing through the inlet looper to obtai...

Embodiment 3

[0055] A production process of a galvanized steel coil, the production process of the galvanized steel coil comprises the following steps:

[0056] S1, take a cold-rolled hard steel coil with a thickness of 0.8mm, its chemical composition and content are shown in Table 1, after being uncoiled by an uncoiler in turn, cut the head and cut the tail, and weld by an automatic seam welder;

[0057] S2, weigh 250g sodium hyaluronate and 1400g deionized water in proportion, add them into a glass container, stir at room temperature to completely dissolve the sodium hyaluronate, adjust the pH of the solution to 6, then add 30g gallium chloride, 250g Sodium silicate and 70 g of sodium stearate were stirred at room temperature for 5 hours at a speed of 650 r / min to obtain a degreasing solution, and then the cold-rolled hard steel coils treated by S1 were immersed in the degreasing solution in turn, and washed with a brush roller. Hot air drying, passing through the inlet looper to obtain ...

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Abstract

The invention relates to a production process of a galvanized steel coil, comprising the following steps: S1, successively uncoiling the cold-rolled hard steel coil, cutting the head and tail, and welding; S2, preparing a degreasing solution, and sequentially disposing the steel coil processed by S1 Immersion in degreasing solution, brushing with rollers, drying with hot air, and treatment with an inlet looper; S3, annealing the steel coil obtained in S1; S4, putting the annealed steel coil into a zinc pot, soaking for 4-5s, and then blowing through an air knife in turn Sweep, cool, dry with hot air, and smooth to obtain a galvanized steel coil; S5, heat the galvanized steel coil, take it out, suck passivation droplets on the surface of the galvanized steel coil with a straw, and dry it; S6, after processing S5 The steel coil obtained in S6 is treated with anti-fingerprint coating, and oiled after being exported through the looper; S7, the steel coil obtained in S6 is slit, coiled, uncoiled, and packaged. The production process of the galvanized steel coil in the present invention can effectively remove pollutants such as dust and iron powder firmly adhered to the surface of the steel coil, which is beneficial to improve the quality of the galvanized steel coil, thereby prolonging the galvanized steel coil. The service life of the roll.

Description

technical field [0001] The invention relates to the technical field of steel coil processing, in particular to a production process of a galvanized steel coil. Background technique [0002] The production process of hot-dip galvanized steel coil is based on cold-rolled hard steel coil as raw material, and the cold-rolled hard steel coil is immersed in a molten zinc bath to make the surface adhere to a layer of zinc. Galvanized steel coil has excellent corrosion resistance and can prolong its service life. It is widely used in construction, light industry, automobile, agriculture, animal husbandry, fishery, and commerce. For example, the construction industry is mainly used to manufacture anti-corrosion industrial and civil buildings. Panels, roof grilles, etc.; light industry uses it to make home appliance shells, civil chimneys, kitchen utensils, etc; Products for freezing and processing tools, etc.; commercial use is mainly used as storage and transportation of materials,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C2/02C23C2/06C23C2/20C23C2/28C23C22/05C23C22/73C23G1/08C22C38/12C22C38/06C22C38/04C22C38/02C21D1/26
CPCC23C2/06C23C2/02C23C2/20C23C2/28C23C22/73C22C38/02C22C38/04C22C38/06C22C38/12C22C38/002C23C22/05C21D1/26C23G1/08
Inventor 郭金望高淼
Owner ZHEJIANG SOUTHEAST METAL SHEET
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